Catharsis.NET.Repository is a library that provides an abstraction over persistent data storages by introducing common repository pattern interfaces over popular ORM frameworks (NHibernate, Entity Framework, LINQ2SQL).

FastCRM is a Web-based customer relationship management system that keeps track of customers and their companies with ease. It allows sales people to quickly manage their accounts, contacts, and opportunities. It can also be used to track daily tasks, meetings, etc. Payments tracking and recurring payments are supported. Customers can be mapped with GPS coordinates. It provides management with assessment charts and audit.

Flora is a minimalistic but very powerful NoSQL database. It is easy to understand with data readable by both humans and machines, schemaless, Lua-scriptable, remotely accessible through TCP, and portable. It is especially suited for A. I. tasks, and a longer-term goal is support for "natural language" queries.

PGObject::Simple::Role provides an interface to the PGObject service locator for Moo and Moose Perl classes. This service locator is intended to integrate Perl objects with PostgreSQL user-defined functions, and this uses the "simple" mapping approach. Between PGObject::Simple::Rrole and PGObject::Util::DBMethod, it is possible to write fully-declarative classes in which all calculation logic is handed off to database functions.

MQT is an HTML5 application which allows browsing and querying of SQL databases, currently supporting MySQL and PostgreSQL. It may be viewed as rather simple-minded competition to phpMyAdmin, with a focus on getting SELECT queries done just right and tuned to blazing performance.

Valentina Studio is a GUI manager for local files of Valentina DB, SQLite, MySQL, PostgreSQL, and Valentina DB Server. It can edit and browse schemas and records, do SQL queries using a smart SQL editor with autocompletion, export/import into different formats, do SQL dumps, and draw diagrams using reverse engineering.

InfiniSQL is a distributed in-memory NewSQL relational database management system (RDBMS). It excels at performing complex transactions which involve records on multiple server nodes. It is engineered around the actor model of concurrent programming, which enables unique scalability capabilities.

RecDB is a recommendation engine built entirely inside PostgreSQL 9.2. It allows application developers to build recommendation applications using a wide variety of built-in recommendation algorithms such as user-user collaborative filtering, item-item collaborative filtering, and singular value decomposition. Applications powered by RecDB can produce online and flexible personalized recommendations to end-users. It is easily used and configured and allows novice developers to define a variety of recommenders that fits their application's needs in few lines of SQL. It can seamlessly integrate recommendation functionality with traditional database operations.